This is what I saw in my dream, compact parametric SynSR outrunner for ebikes:
Straight stator version (0 deg skew):
203mm brake disc for size comparison:
Winding scheme by http://www.bavaria-direct.co.za/scheme/common/
Skewed stator version (10deg):
Motor type: SynSR outrunner, DD
Gearbox: Not at the moment, but possible due to the modular design
Max rpm: 16k rpm with add-on gearbox.
Bearings: 2 pcs of SKF NKI 16/20. d=20mm, D=32mm, B=16mm, m=48g. Dynamic 15,4kN, static 24.5kN, fatigue@295kg each.
Number of poles: 6
Total mass: less than 1999g.